Culvert.



' W. H. HAIGHT.

OULVERT. APPLICATION FILED MAR. 27, 191 2.

1,048,153. I Patented D'ec.2 1, 1912.

F/& 6. 22

UNITED STATES PATENT, OFFICE.

, WILLIAM H. HAIGHT, or NOBTEFIELD, :nrmmiso'ra.

CULVEBT.

Specification ot Lztters Patent. Patented Dec. 24, 1912.

Application filed March 27, 1912. Serial No. 686,705.

To all whom it may concern: Be it known that I, WILLIAM H. of Northfield, Rice county, Minnesota, have invented certain new and useful Improvements in Culverts, of which the following is aspecification.

As usually constructed, devices of this kind are made of equal; diameter through-' outitheir whole length, rendering them by friction and from other causes easily choked by sediment and ice, sometimes causing back water and damage from flooding. The object, therefore, of my invention is to provide a pipe which will clear itself naturally from ice and sediment.

My invention consists generally-in gradually increasing the cross sectional area of the pipe section from charge end. l In the accompanying drawings-forming part of this specification, Figure 1 is a side view, partially in sect-ion, of a culvert pipe embodying my invention, Figs. 2, 3 and 4' are detail .views illustrating modifications in the form of the joint between the sections, Figs. 5, 6, 7 and 8 illustrate modificaits inlet to its distions in the shape of the sections, Fig. 9,

durable when exposed to the corroding action of water and earth. '.These sections, as noted in Fig. 1, each gradually 'increase in cross sectional area from the receiving toward the discharge end, the receiving end of section 2 being preferably provided with a collar 5 which may be employed when necessary to hold the embankment and prevent washing of an unnecessary amount of sediment by the flow of water entering the culvert or conduit. The initial section is provided with a flaring lip or 'flange 6 at its discharge end that is adapted to nest with' the oppositely turned flange 7 of the receiving end of .the adjacent section, thereby forming a snug joint and preventing'leak- HAIGHT,

preferably galvanized iron, as being more agebetween the sections The following sections are equipped in a similar manner.

I may prefer also to reinforce or strengthen the sections by means of metallic rings 8 arranged at suitable intervals on the sectiOIlS. i In Fig. 2 another form of joint is shown, which consists in providing an outwardly turned flange 9 on thedischarge end of one of the sections to contact with an inwardly turned flange 10 of the adjacent section.

In Fig. 3 the sections are telescoped at 11.

In Fig.- 4 a wirehoop 12 is rolled into the end of each section, one roll being turned in and the other out to engage one another when the sections are assembled.

In Fig. 5 a section 13 is shown, made oval in form. v

In Fig. 6 the section 14 is similar to-the one shown in Fig. 5, except that, the bottom of the, section is flat,,or nearlyso.

f In Fig. 7 the sect-ion 15 is cylindrical in orm.

In Fig. 8 a section 16 is shown with rounded walls, narrower at the base than at the top.

In Fig. 9 I haveshown a section 17 composed of composition material, such as concrete, having an annular flaring flange 18 at one end provided with a recess '19 to re I ceive the end of the, adjacent section 20,

the inner walls .of the sections forming a smooth, continuous surface.

In Fig. 10 the section 21 has an annular flange 22 at one end provided with a beveled face 23, against which the corresponding face at the end of .the section 24 is seated. This section 245 is preferably provided with a flaring end or mouth 25.

In Fig. 11 a serles of the sections; are shown in nested form, for convenience 1n the sheet metal construction illustrated in Fig. 1. The rings or hoops 8 areiormd separately from the sections and are driven on after the telescoping sections are extended, consequently they will not interfere in.

the nesting of the sections.

In thev sectional construction illustrated in Figs. 5 to 8, the oval forms in Figs. 5 and 6 provide for increased strength and clearance and are adapted particularly for as to depth, as, for instance, under street shipping or storing, this figure relating to use where the fill over the culvert is limited crossings, where the covering will be largely of cement, concrete, or the like. All of-these forms will gradually increase in cross sec-' tional area from the receiv' toward the discharge ends. The sections, increasing 1n cross sectional area from end to end and from section to section, will be numbered consecutively for convenience in assembling, and any number of sections may be furnished, according to the length of the culvert or wherever the device may be used.

In culverts generall it is necessary to contend a ainst a wash or a sediment and in colder c imates this sediment is frequently combined with ice, therebychoking the flow, and usually. at a time when the conduit should be free and 0 en. Culverts are usually of comparativeij short length and a pipe of suitable diameter to take care of the flow may, by utilizing this invention, be reduced considerably in cross sectional area at the intake and enlarged at the discharge end, the average diameter being used as a basis for figuring the capacity of the pipe. It'will be readily understood that a pipe thus gradually increasing in cross sectional area will prevent unnecessary friction and when choked by ice, the seepage around the outside and the pressure of the water from 1 the rear will soon work through and produce an outlet, and the clogged. material will, by the action of the water, soon be wasted away and carried to the discharge end of the pipe.

"I do not wish to confine the use of my invention to culverts, as it may be employed in various ways where it is desirable to prevent choking of ice or. sediment in the interior of a water-carrying pipe.

I claim as my invention 1. A culvert composed of sectionshaving their abutting ends joined together, each section gradually increasing in cross sectional area from its receiving toward its discharge end whereby the? inner walls of the culvert will flare continuously from the inlet to the outlet thereof.

2. A device of the class described comprising abutting sections adapted to telescope with one another from end -to end, the larger end of one section having means to engage the receivin end of the adjacent section and form a joint therewith, each of said sections increasing gradually in cross sectional area from its receiving toward its discharge end. I I

3. A device of the" class described comprising a series of separable sections increasing gradually in cross sectional areairom their receiving toward their discharge ends, whereby the sections, when assembled, will form a continuous opening gradually increasing in size from one end to the other, and a flaring collar provided at the receiving end of the initial section.

4. A culvert composed'of a series of telescoping metallic sections, each section hav ing a reinforcing band encircling the same and increasing gradually in diameter from its receiving toward its discharge end, the discharge end of each section having means for 'interlockingwith the receiving end of the adjacent section;

In witness whereof, I have hereunto set my hand this 20th day of March, 1912.

JENNm M. HAIGHT, CHARLES R. Pm. 

